Data Types

Data types in Hadoop are classified into 4 types
- Column Types
- Literals
- Null Values
- Complex Types

When the data range exceeds the range of INT, you need to use BIGINT and if the data range is smaller than the INT, you use SMALLINT. TINYINT is smaller than SMALLINT.

String type data types can be specified using single quotes (' ') or double quotes (" "). It contains two data types: VARCHAR and CHAR

Timestamp (“YYYY-MM-DD HH:MM:SS.fffffffff”)

Dates (YYYY-MM-DD)

Decimals (10,0)

Union Types : It is a collection of heterogeneous data types.

Null Value : Missing values are referred here as null values.

Arrays : These are used just like in java.

Maps : These are similar to java maps

Structs : Here complex data is used with comments.